v0.49.0 — Shared avatar cropper for search settings

[0.49.0] - 2026-10-21

The search settings avatar uses the shared cropper

• The search page's settings drawer now uploads its avatar through the same
  crop dialog as the user profile: pick an image, drag/zoom the square in the
  shared avatar-upload modal, and the 64x64 data URL is shown in the drawer
  with a remove button. Non-image files and images over 4 MB are rejected with
  the upstream copy.
• SearchAppSeed gained the avatar column (POST/PUT /api/v1/searchapps),
  so the cropped image survives save and reload exactly like the React
  AvatarNameDescription field.
• The avatar crop dialog is now mounted once in the shared page shell instead of
  only inside the user-settings area, so every avatar uploader opens the same
  modal.

Admin console re-audited against v0.27.2

• The admin console CDP battery was re-run on the release build and all
  reachable pages matched: console login/guard/cache trio, the services table
  (search, paging, hover action icons, typed JSON view and detail dialogs), the
  users table (superuser selector, password/delete dialogs, own-row hiding) and
  the user detail page with its datasets/agents tables.